Stockton's electromagnet crossword

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Across
  1. 5. a mettle cord
  2. 8. keeps lights on
  3. 11. charged stuff without an outlet
  4. 12. where all compass points
  5. 13. turns things in cars
  6. 14. field
  7. 16. a mineral in our blood
  8. 18. on the sides of a magnet
  9. 19. pulls together
  10. 20. an old penny
  11. 21. how to measure electricity
Down
  1. 1. nano particals
  2. 2. force that occurs between electrically charged particles
  3. 3. when power goes out keeps lights on
  4. 4. on the other side of a magnet
  5. 6. the north pole
  6. 7. its chemical symbol is Co
  7. 9. the electric flow through something
  8. 10. chemical symbol is Ni
  9. 15. you need a hammer
  10. 17. it goes through an electric fence
  11. 20. how to find your way home